Perhaps they're working hard—they don't appear to be very studious here, but they are very friendly.

也许他们工作很努力——他们在这里似乎看上去不太用功，但他们很友好。

youdao

Cheating is a violation of the school policy. Students are expected to be be honest and studious. They should improve their studying methods and prepare well for exams.

作弊不对。违反校规。要诚实。努力学习，应改进学习方法，作好考前准备。

youdao

He devoted studious hours to getting up the subject to be discussed.

他花了好几个学时认真准备要讨论的课题。

youdao

This parable may seem, I think, to be a little more compatible with Milton's general temperament in the years of his studious retirement.

我认为，第二则寓言与弥尔顿，的性情更相符,在他潜心学习的那几年里。

耶鲁公开课 - 弥尔顿课程节选